State whether the following figures are congruent or not.

                                                                         

There are three squares, one with side length $5\mathrm{cm}$, other with length double the first one and other with sides$5\mathrm{cm}$ but it is rotated by an angle. Which of them is congruent? Why?
                        

In the given figure, the congruent parts are marked. Prove that $∆\mathrm{ABC}\cong ∆\mathrm{DCB}.$

In the given figure, the congruent parts are marked. Prove that $∆\mathrm{BAD}\cong ∆\mathrm{BCD}.$
  

Measure the length of sides and angles in the following triangles. Are the two triangles congruent? If yes, give their correspondence.
                                 

In the figure below, state the three pairs of equal parts in $∆\mathrm{PQR}$ and $∆\mathrm{TUS}$. Is $∆\mathrm{PQR}\cong ∆\mathrm{TUS} ?$ If yes, by which congruence condition?
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